/*
 * Copyright © 2016-2017 European Support Limited
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.openecomp.core.factory;

import java.io.IOException;
import java.io.InputStream;
import java.net.URL;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.openecomp.core.factory.api.FactoriesConfiguration;
import org.openecomp.core.utilities.file.FileUtils;
import org.openecomp.core.utilities.json.JsonUtil;
import org.openecomp.sdc.common.errors.SdcConfigurationException;

public final class FactoriesConfigImpl implements FactoriesConfiguration {

    private final Map factoryConfigurationMap = new HashMap();

    public FactoriesConfigImpl() {
        init();
    }

    @SuppressWarnings("unchecked")
    @Override
    public Map<String, String> getFactoriesMap() {
        return factoryConfigurationMap;
    }

    private void init() {
        final List<URL> factoryConfigUrlList = FileUtils.getAllLocations("factoryConfiguration.json");
        for (final URL factoryConfigUrl : factoryConfigUrlList) {
            try (InputStream stream = factoryConfigUrl.openStream()) {
                factoryConfigurationMap.putAll(JsonUtil.json2Object(stream, Map.class));
            } catch (final IOException e) {
                throw new SdcConfigurationException("Failed to initialize Factory from '" + factoryConfigUrl.getPath() + "'", e);
            }
        }
    }
}
